Improvement in cultivators



. tion in the field.

UNTTED STATES CHARLES A. BENTLEY, OF CANTON, ILLINOIS, A'SSIGNOR OF ONE-HALF HISy PATENT OFFICE.-

RIGHT TO MARTIN HOFFMAN, OF SAME PLAGE.

IMPROVEMENT INlcuLTlvApToRs.

Specification forming part of Letters Patent No. 183,280, dated October 17, 1876; application filed August 29, '1876.

of Illinois, have invented certain new andV useful Improvements vin Oultivators; and 1 do hereby declare that the following is a full,`

clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, refen ence being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

The nature of my invention relates to improvements in cultivators of that class known as ridingcultivators-machines in which the operator sits o r rides upon the machine, and controls its operations, principally with his feet, and partially with his hands; and the invention consists, rst, in the combination, with a Ina-in supporting-frame pivoted to the supporting-wheels, of a plow-supporting frame pivoted thereto, and provided with a crank and hand-lever on a rockshaft, by means of which both frames may be oscillated, andthe plows elevated and lowered at pleasure, and locked in an elevated position when desired, further, the invention consists in the peculiar construction of the seatsupporting bar, all as hereinafter fully described.

In the accompanying drawing, Figure lis 4a top view of a cultivator embodying my invention. Fig. 2 is a sectional view in the line Fig. 1, the parts in position as in opera- Fig. 3 is a rear elevation of the drivers seat and its supporting-bar, and a sectional view of the frame-pieces on which the supporting-bar is placed. Y

Referring to the parts by letters, A A represent the side bars of the main frame, and carry spindles a a, on which the supportingwheels B are journaled. C 1-are the side barsof the plow supporting frame, converging at their forward ends, to which is attached the draft-pole D, and connected rigidly' by transverse bars E and F. G G are the outside and rear plows, the standards of which diverge at their upper ends, and are bolted rigidly to the bars G by the same bolts which attach thereto the bars E and F, as plainly shown in the drawings. H H are bolts, pivoting the forward ends of the bars C to the upper ends of the forward branches of the plow-standards G. I I are the central and forward plowstandards, pivoted by bolts at their upper ends to the bar F, and connected midway their lengths by a rod, J, pivoted t-o each standard at its ends, and its central part curved upward to pass over the growing corn. K K are eyebolts, adjustably secured in the bars E by nuts 7c, and connected by hook-andeye rods k with yokes lo, toward and .on the lower ends of the standards I. The rods k allow the standards I to swing laterally, the rod J makes their .movements simultaneous, and the eyebolts K may be adjusted to change and adjust the horizontal angle thereof. L L are bell-crank-shaped foot-levers, vpivoted at their angles, one to each rear branch of' the bifurcated standards G, and their lower ends connected by eye-rods l, one to each standard I, and their other ends extending inwardly to near each other, and provided with stirrups l. M is a rock-shaft, journaled in the bars O C, and carrying on its ends crank-shaped bars m, with feet m', and on its central part a halidlever, m. N is the drivers seat, supported centrally on a bar, O, from the ends of which lextend downwardly-projecting pendants P,

pierced for the passage ofthe bars A, on which they slide, and on which they may be lixed in any desired position by set-screws p. Q Q are truss rods or braces, extending from the `lower end of the pendants P to the central part of the bar O.

The operation is as follows: The driver in his seat N, and with his feet in the stirrups l', may control and operate the lateral movements of the plows I at pleasure, in the obvi.

:moed generally by the drier in his seat, and the seatbar O may be adjusted, as already described, on the bars A for dierent-Weigbt arranged 13o-operate with the rock-shaft M,YY

cranks m, a-nd hand-lever m, substantially as and for the purpose specified.

2. The seat-support, constructed as described, of a. truss-frame, rmd adjuster-bly seated on the bars C, substau tially as and for the purpose specified.

In testimony that I claim the foregoing as my `own I affix my signatureinpresence of two Witnesses.

` CHARLES A. B]E}l\TlL]}Y.`

Witnesses:

W. B. RmHARDs, THOMAS MGKEE. 

